Water Treatment Class 3 - A
questions with complete
verified solutions (graded
A+)
Cross connection - answer a connection between a potable water system
and an unapproved water supply. Mixing can occur, leading to
contamination of drinking water.
Detention time - answer time required for a small amount of water to pass
through a tank at a given rate of flow. (volume, gal x 24 hr/day)/(flow,
gal/day)
Drawdown - answer 1) drop in the water table or lvl of water in the ground
when being pumped from a well
2) amount of water used from reservoir
3) drop in the water level of a reservoir
safe yield - answer annual quantity of water that can be taken from a
source of supply over a period of yrs without depleting the source
short-circuiting - answer occurs in a basin: some of the flowing water
entering a tank flows along a direct pathway from the inlet to the outlet.
results in shorter contact, reaction, or settling times
yield - answer quantity of water that can be collected from a given surface
or groundwater source.
zone of aeration - answer dry soil or rock between ground surface and top
of water table
, zone of saturation - answer soil or rock located below the top of the
groundwater table...saturated with water
water characteristics - answer physical- color, turbidity, temp, taste, and
odor.
chemical- alkalinity, pH, chemical, presence or absence of VOCs, SOCs
biological- presence of viruses, bacteria, algae, etc
radiological - contact with radioactive substances
Safe Drinking Water Act - answer 1974,
*set national standards regulating the levels of contaminants
* require public water systems to monitor and report lvls of identified
contaminants
*establish guidelines for the acceptable treatment technologies
public water system - answer 1. has at least 15 service connections OR
2. regularly serves 25 individuals daily (60 days a year)
community water system - answer 1. has at least 15 service connections
(used by all year residents) OR
2. regularly serves at least 25 all year residents
3 basic objectives of water treatment - answer 1. production of safe
drinking water
2. production of aesthetically pleasing drinking water
3. production of drinking water at a reasonable cost with respect to
capital, operation, and maintenance costs
3 types of water rights - answer 1. riparian
2. appropriative
3. presriptive
questions with complete
verified solutions (graded
A+)
Cross connection - answer a connection between a potable water system
and an unapproved water supply. Mixing can occur, leading to
contamination of drinking water.
Detention time - answer time required for a small amount of water to pass
through a tank at a given rate of flow. (volume, gal x 24 hr/day)/(flow,
gal/day)
Drawdown - answer 1) drop in the water table or lvl of water in the ground
when being pumped from a well
2) amount of water used from reservoir
3) drop in the water level of a reservoir
safe yield - answer annual quantity of water that can be taken from a
source of supply over a period of yrs without depleting the source
short-circuiting - answer occurs in a basin: some of the flowing water
entering a tank flows along a direct pathway from the inlet to the outlet.
results in shorter contact, reaction, or settling times
yield - answer quantity of water that can be collected from a given surface
or groundwater source.
zone of aeration - answer dry soil or rock between ground surface and top
of water table
, zone of saturation - answer soil or rock located below the top of the
groundwater table...saturated with water
water characteristics - answer physical- color, turbidity, temp, taste, and
odor.
chemical- alkalinity, pH, chemical, presence or absence of VOCs, SOCs
biological- presence of viruses, bacteria, algae, etc
radiological - contact with radioactive substances
Safe Drinking Water Act - answer 1974,
*set national standards regulating the levels of contaminants
* require public water systems to monitor and report lvls of identified
contaminants
*establish guidelines for the acceptable treatment technologies
public water system - answer 1. has at least 15 service connections OR
2. regularly serves 25 individuals daily (60 days a year)
community water system - answer 1. has at least 15 service connections
(used by all year residents) OR
2. regularly serves at least 25 all year residents
3 basic objectives of water treatment - answer 1. production of safe
drinking water
2. production of aesthetically pleasing drinking water
3. production of drinking water at a reasonable cost with respect to
capital, operation, and maintenance costs
3 types of water rights - answer 1. riparian
2. appropriative
3. presriptive
